diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath6kl/cfg80211.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath6kl/cfg80211.c | 1916 |
1 files changed, 1916 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c new file mode 100644 index 00000000000..f517eb8f7b4 --- /dev/null +++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c @@ -0,0 +1,1916 @@ +/* + * Copyright (c) 2004-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/moduleparam.h> + +#include "core.h" +#include "cfg80211.h" +#include "debug.h" +#include "hif-ops.h" +#include "testmode.h" + +static unsigned int ath6kl_p2p; + +module_param(ath6kl_p2p, uint, 0644); + +#define RATETAB_ENT(_rate, _rateid, _flags) { \ + .bitrate = (_rate), \ + .flags = (_flags), \ + .hw_value = (_rateid), \ +} + +#define CHAN2G(_channel, _freq, _flags) { \ + .band = IEEE80211_BAND_2GHZ, \ + .hw_value = (_channel), \ + .center_freq = (_freq), \ + .flags = (_flags), \ + .max_antenna_gain = 0, \ + .max_power = 30, \ +} + +#define CHAN5G(_channel, _flags) { \ + .band = IEEE80211_BAND_5GHZ, \ + .hw_value = (_channel), \ + .center_freq = 5000 + (5 * (_channel)), \ + .flags = (_flags), \ + .max_antenna_gain = 0, \ + .max_power = 30, \ +} + +static struct ieee80211_rate ath6kl_rates[] = { + RATETAB_ENT(10, 0x1, 0), + RATETAB_ENT(20, 0x2, 0), + RATETAB_ENT(55, 0x4, 0), + RATETAB_ENT(110, 0x8, 0), + RATETAB_ENT(60, 0x10, 0), + RATETAB_ENT(90, 0x20, 0), + RATETAB_ENT(120, 0x40, 0), + RATETAB_ENT(180, 0x80, 0), + RATETAB_ENT(240, 0x100, 0), + RATETAB_ENT(360, 0x200, 0), + RATETAB_ENT(480, 0x400, 0), + RATETAB_ENT(540, 0x800, 0), +}; + +#define ath6kl_a_rates (ath6kl_rates + 4) +#define ath6kl_a_rates_size 8 +#define ath6kl_g_rates (ath6kl_rates + 0) +#define ath6kl_g_rates_size 12 + +static struct ieee80211_channel ath6kl_2ghz_channels[] = { + CHAN2G(1, 2412, 0), + CHAN2G(2, 2417, 0), + CHAN2G(3, 2422, 0), + CHAN2G(4, 2427, 0), + CHAN2G(5, 2432, 0), + CHAN2G(6, 2437, 0), + CHAN2G(7, 2442, 0), + CHAN2G(8, 2447, 0), + CHAN2G(9, 2452, 0), + CHAN2G(10, 2457, 0), + CHAN2G(11, 2462, 0), + CHAN2G(12, 2467, 0), + CHAN2G(13, 2472, 0), + CHAN2G(14, 2484, 0), +}; + +static struct ieee80211_channel ath6kl_5ghz_a_channels[] = { + CHAN5G(34, 0), CHAN5G(36, 0), + CHAN5G(38, 0), CHAN5G(40, 0), + CHAN5G(42, 0), CHAN5G(44, 0), + CHAN5G(46, 0), CHAN5G(48, 0), + CHAN5G(52, 0), CHAN5G(56, 0), + CHAN5G(60, 0), CHAN5G(64, 0), + CHAN5G(100, 0), CHAN5G(104, 0), + CHAN5G(108, 0), CHAN5G(112, 0), + CHAN5G(116, 0), CHAN5G(120, 0), + CHAN5G(124, 0), CHAN5G(128, 0), + CHAN5G(132, 0), CHAN5G(136, 0), + CHAN5G(140, 0), CHAN5G(149, 0), + CHAN5G(153, 0), CHAN5G(157, 0), + CHAN5G(161, 0), CHAN5G(165, 0), + CHAN5G(184, 0), CHAN5G(188, 0), + CHAN5G(192, 0), CHAN5G(196, 0), + CHAN5G(200, 0), CHAN5G(204, 0), + CHAN5G(208, 0), CHAN5G(212, 0), + CHAN5G(216, 0), +}; + +static struct ieee80211_supported_band ath6kl_band_2ghz = { + .n_channels = ARRAY_SIZE(ath6kl_2ghz_channels), + .channels = ath6kl_2ghz_channels, + .n_bitrates = ath6kl_g_rates_size, + .bitrates = ath6kl_g_rates, +}; + +static struct ieee80211_supported_band ath6kl_band_5ghz = { + .n_channels = ARRAY_SIZE(ath6kl_5ghz_a_channels), + .channels = ath6kl_5ghz_a_channels, + .n_bitrates = ath6kl_a_rates_size, + .bitrates = ath6kl_a_rates, +}; + +static int ath6kl_set_wpa_version(struct ath6kl *ar, + enum nl80211_wpa_versions wpa_version) +{ + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: %u\n", __func__, wpa_version); + + if (!wpa_version) { + ar->auth_mode = NONE_AUTH; + } else if (wpa_version & NL80211_WPA_VERSION_2) { + ar->auth_mode = WPA2_AUTH; + } else if (wpa_version & NL80211_WPA_VERSION_1) { + ar->auth_mode = WPA_AUTH; + } else { + ath6kl_err("%s: %u not supported\n", __func__, wpa_version); + return -ENOTSUPP; + } + + return 0; +} + +static int ath6kl_set_auth_type(struct ath6kl *ar, + enum nl80211_auth_type auth_type) +{ + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, auth_type); + + switch (auth_type) { + case NL80211_AUTHTYPE_OPEN_SYSTEM: + ar->dot11_auth_mode = OPEN_AUTH; + break; + case NL80211_AUTHTYPE_SHARED_KEY: + ar->dot11_auth_mode = SHARED_AUTH; + break; + case NL80211_AUTHTYPE_NETWORK_EAP: + ar->dot11_auth_mode = LEAP_AUTH; + break; + + case NL80211_AUTHTYPE_AUTOMATIC: + ar->dot11_auth_mode = OPEN_AUTH | SHARED_AUTH; + break; + + default: + ath6kl_err("%s: 0x%x not spported\n", __func__, auth_type); + return -ENOTSUPP; + } + + return 0; +} + +static int ath6kl_set_cipher(struct ath6kl *ar, u32 cipher, bool ucast) +{ + u8 *ar_cipher = ucast ? &ar->prwise_crypto : &ar->grp_crypto; + u8 *ar_cipher_len = ucast ? &ar->prwise_crypto_len : + &ar->grp_crypto_len; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: cipher 0x%x, ucast %u\n", + __func__, cipher, ucast); + + switch (cipher) { + case 0: + /* our own hack to use value 0 as no crypto used */ + *ar_cipher = NONE_CRYPT; + *ar_cipher_len = 0; + break; + case WLAN_CIPHER_SUITE_WEP40: + *ar_cipher = WEP_CRYPT; + *ar_cipher_len = 5; + break; + case WLAN_CIPHER_SUITE_WEP104: + *ar_cipher = WEP_CRYPT; + *ar_cipher_len = 13; + break; + case WLAN_CIPHER_SUITE_TKIP: + *ar_cipher = TKIP_CRYPT; + *ar_cipher_len = 0; + break; + case WLAN_CIPHER_SUITE_CCMP: + *ar_cipher = AES_CRYPT; + *ar_cipher_len = 0; + break; + default: + ath6kl_err("cipher 0x%x not supported\n", cipher); + return -ENOTSUPP; + } + + return 0; +} + +static void ath6kl_set_key_mgmt(struct ath6kl *ar, u32 key_mgmt) +{ + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, key_mgmt); + + if (key_mgmt == WLAN_AKM_SUITE_PSK) { + if (ar->auth_mode == WPA_AUTH) + ar->auth_mode = WPA_PSK_AUTH; + else if (ar->auth_mode == WPA2_AUTH) + ar->auth_mode = WPA2_PSK_AUTH; + } else if (key_mgmt != WLAN_AKM_SUITE_8021X) { + ar->auth_mode = NONE_AUTH; + } +} + +static bool ath6kl_cfg80211_ready(struct ath6kl *ar) +{ + if (!test_bit(WMI_READY, &ar->flag)) { + ath6kl_err("wmi is not ready\n"); + return false; + } + + if (!test_bit(WLAN_ENABLED, &ar->flag)) { + ath6kl_err("wlan disabled\n"); + return false; + } + + return true; +} + +static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_connect_params *sme) +{ + struct ath6kl *ar = ath6kl_priv(dev); + int status; + + ar->sme_state = SME_CONNECTING; + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) { + ath6kl_err("destroy in progress\n"); + return -EBUSY; + } + + if (test_bit(SKIP_SCAN, &ar->flag) && + ((sme->channel && sme->channel->center_freq == 0) || + (sme->bssid && is_zero_ether_addr(sme->bssid)))) { + ath6kl_err("SkipScan: channel or bssid invalid\n"); + return -EINVAL; + } + + if (down_interruptible(&ar->sem)) { + ath6kl_err("busy, couldn't get access\n"); + return -ERESTARTSYS; + } + + if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) { + ath6kl_err("busy, destroy in progress\n"); + up(&ar->sem); + return -EBUSY; + } + + if (ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)]) { + /* + * sleep until the command queue drains + */ + wait_event_interruptible_timeout(ar->event_wq, + ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)] == 0, + WMI_TIMEOUT); + if (signal_pending(current)) { + ath6kl_err("cmd queue drain timeout\n"); + up(&ar->sem); + return -EINTR; + } + } + + if (test_bit(CONNECTED, &ar->flag) && + ar->ssid_len == sme->ssid_len && + !memcmp(ar->ssid, sme->ssid, ar->ssid_len)) { + ar->reconnect_flag = true; + status = ath6kl_wmi_reconnect_cmd(ar->wmi, ar->req_bssid, + ar->ch_hint); + + up(&ar->sem); + if (status) { + ath6kl_err("wmi_reconnect_cmd failed\n"); + return -EIO; + } + return 0; + } else if (ar->ssid_len == sme->ssid_len && + !memcmp(ar->ssid, sme->ssid, ar->ssid_len)) { + ath6kl_disconnect(ar); + } + + memset(ar->ssid, 0, sizeof(ar->ssid)); + ar->ssid_len = sme->ssid_len; + memcpy(ar->ssid, sme->ssid, sme->ssid_len); + + if (sme->channel) + ar->ch_hint = sme->channel->center_freq; + + memset(ar->req_bssid, 0, sizeof(ar->req_bssid)); + if (sme->bssid && !is_broadcast_ether_addr(sme->bssid)) + memcpy(ar->req_bssid, sme->bssid, sizeof(ar->req_bssid)); + + ath6kl_set_wpa_version(ar, sme->crypto.wpa_versions); + + status = ath6kl_set_auth_type(ar, sme->auth_type); + if (status) { + up(&ar->sem); + return status; + } + + if (sme->crypto.n_ciphers_pairwise) + ath6kl_set_cipher(ar, sme->crypto.ciphers_pairwise[0], true); + else + ath6kl_set_cipher(ar, 0, true); + + ath6kl_set_cipher(ar, sme->crypto.cipher_group, false); + + if (sme->crypto.n_akm_suites) + ath6kl_set_key_mgmt(ar, sme->crypto.akm_suites[0]); + + if ((sme->key_len) && + (ar->auth_mode == NONE_AUTH) && (ar->prwise_crypto == WEP_CRYPT)) { + struct ath6kl_key *key = NULL; + + if (sme->key_idx < WMI_MIN_KEY_INDEX || + sme->key_idx > WMI_MAX_KEY_INDEX) { + ath6kl_err("key index %d out of bounds\n", + sme->key_idx); + up(&ar->sem); + return -ENOENT; + } + + key = &ar->keys[sme->key_idx]; + key->key_len = sme->key_len; + memcpy(key->key, sme->key, key->key_len); + key->cipher = ar->prwise_crypto; + ar->def_txkey_index = sme->key_idx; + + ath6kl_wmi_addkey_cmd(ar->wmi, sme->key_idx, + ar->prwise_crypto, + GROUP_USAGE | TX_USAGE, + key->key_len, + NULL, + key->key, KEY_OP_INIT_VAL, NULL, + NO_SYNC_WMIFLAG); + } + + if (!ar->usr_bss_filter) { + clear_bit(CLEAR_BSSFILTER_ON_BEACON, &ar->flag); + if (ath6kl_wmi_bssfilter_cmd(ar->wmi, ALL_BSS_FILTER, 0) != 0) { + ath6kl_err("couldn't set bss filtering\n"); + up(&ar->sem); + return -EIO; + } + } + + ar->nw_type = ar->next_mode; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: connect called with authmode %d dot11 auth %d" + " PW crypto %d PW crypto len %d GRP crypto %d" + " GRP crypto len %d channel hint %u\n", + __func__, + ar->auth_mode, ar->dot11_auth_mode, ar->prwise_crypto, + ar->prwise_crypto_len, ar->grp_crypto, + ar->grp_crypto_len, ar->ch_hint); + + ar->reconnect_flag = 0; + status = ath6kl_wmi_connect_cmd(ar->wmi, ar->nw_type, + ar->dot11_auth_mode, ar->auth_mode, + ar->prwise_crypto, + ar->prwise_crypto_len, + ar->grp_crypto, ar->grp_crypto_len, + ar->ssid_len, ar->ssid, + ar->req_bssid, ar->ch_hint, + ar->connect_ctrl_flags); + + up(&ar->sem); + + if (status == -EINVAL) { + memset(ar->ssid, 0, sizeof(ar->ssid)); + ar->ssid_len = 0; + ath6kl_err("invalid request\n"); + return -ENOENT; + } else if (status) { + ath6kl_err("ath6kl_wmi_connect_cmd failed\n"); + return -EIO; + } + + if ((!(ar->connect_ctrl_flags & CONNECT_DO_WPA_OFFLOAD)) && + ((ar->auth_mode == WPA_PSK_AUTH) + || (ar->auth_mode == WPA2_PSK_AUTH))) { + mod_timer(&ar->disconnect_timer, + jiffies + msecs_to_jiffies(DISCON_TIMER_INTVAL)); + } + + ar->connect_ctrl_flags &= ~CONNECT_DO_WPA_OFFLOAD; + set_bit(CONNECT_PEND, &ar->flag); + + return 0; +} + +static int ath6kl_add_bss_if_needed(struct ath6kl *ar, const u8 *bssid, + struct ieee80211_channel *chan, + const u8 *beacon_ie, size_t beacon_ie_len) +{ + struct cfg80211_bss *bss; + u8 *ie; + + bss = cfg80211_get_bss(ar->wdev->wiphy, chan, bssid, + ar->ssid, ar->ssid_len, WLAN_CAPABILITY_ESS, + WLAN_CAPABILITY_ESS); + if (bss == NULL) { + /* + * Since cfg80211 may not yet know about the BSS, + * generate a partial entry until the first BSS info + * event becomes available. + * + * Prepend SSID element since it is not included in the Beacon + * IEs from the target. + */ + ie = kmalloc(2 + ar->ssid_len + beacon_ie_len, GFP_KERNEL); + if (ie == NULL) + return -ENOMEM; + ie[0] = WLAN_EID_SSID; + ie[1] = ar->ssid_len; + memcpy(ie + 2, ar->ssid, ar->ssid_len); + memcpy(ie + 2 + ar->ssid_len, beacon_ie, beacon_ie_len); + bss = cfg80211_inform_bss(ar->wdev->wiphy, chan, + bssid, 0, WLAN_CAPABILITY_ESS, 100, + ie, 2 + ar->ssid_len + beacon_ie_len, + 0, GFP_KERNEL); + if (bss) + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "added dummy bss for " + "%pM prior to indicating connect/roamed " + "event\n", bssid); + kfree(ie); + } else + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "cfg80211 already has a bss " + "entry\n"); + + if (bss == NULL) + return -ENOMEM; + + cfg80211_put_bss(bss); + + return 0; +} + +void ath6kl_cfg80211_connect_event(struct ath6kl *ar, u16 channel, + u8 *bssid, u16 listen_intvl, + u16 beacon_intvl, + enum network_type nw_type, + u8 beacon_ie_len, u8 assoc_req_len, + u8 assoc_resp_len, u8 *assoc_info) +{ + struct ieee80211_channel *chan; + + /* capinfo + listen interval */ + u8 assoc_req_ie_offset = sizeof(u16) + sizeof(u16); + + /* capinfo + status code + associd */ + u8 assoc_resp_ie_offset = sizeof(u16) + sizeof(u16) + sizeof(u16); + + u8 *assoc_req_ie = assoc_info + beacon_ie_len + assoc_req_ie_offset; + u8 *assoc_resp_ie = assoc_info + beacon_ie_len + assoc_req_len + + assoc_resp_ie_offset; + + assoc_req_len -= assoc_req_ie_offset; + assoc_resp_len -= assoc_resp_ie_offset; + + /* + * Store Beacon interval here; DTIM period will be available only once + * a Beacon frame from the AP is seen. + */ + ar->assoc_bss_beacon_int = beacon_intvl; + clear_bit(DTIM_PERIOD_AVAIL, &ar->flag); + + if (nw_type & ADHOC_NETWORK) { + if (ar->wdev->iftype != NL80211_IFTYPE_ADHOC) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: ath6k not in ibss mode\n", __func__); + return; + } + } + + if (nw_type & INFRA_NETWORK) { + if (ar->wdev->iftype != NL80211_IFTYPE_STATION && + ar->wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: ath6k not in station mode\n", __func__); + return; + } + } + + chan = ieee80211_get_channel(ar->wdev->wiphy, (int) channel); + + + if (nw_type & ADHOC_NETWORK) { + cfg80211_ibss_joined(ar->net_dev, bssid, GFP_KERNEL); + return; + } + + if (ath6kl_add_bss_if_needed(ar, bssid, chan, assoc_info, + beacon_ie_len) < 0) { + ath6kl_err("could not add cfg80211 bss entry for " + "connect/roamed notification\n"); + return; + } + + if (ar->sme_state == SME_CONNECTING) { + /* inform connect result to cfg80211 */ + ar->sme_state = SME_CONNECTED; + cfg80211_connect_result(ar->net_dev, bssid, + assoc_req_ie, assoc_req_len, + assoc_resp_ie, assoc_resp_len, + WLAN_STATUS_SUCCESS, GFP_KERNEL); + } else if (ar->sme_state == SME_CONNECTED) { + /* inform roam event to cfg80211 */ + cfg80211_roamed(ar->net_dev, chan, bssid, + assoc_req_ie, assoc_req_len, + assoc_resp_ie, assoc_resp_len, GFP_KERNEL); + } +} + +static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy, + struct net_device *dev, u16 reason_code) +{ + struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(dev); + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: reason=%u\n", __func__, + reason_code); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) { + ath6kl_err("busy, destroy in progress\n"); + return -EBUSY; + } + + if (down_interruptible(&ar->sem)) { + ath6kl_err("busy, couldn't get access\n"); + return -ERESTARTSYS; + } + + ar->reconnect_flag = 0; + ath6kl_disconnect(ar); + memset(ar->ssid, 0, sizeof(ar->ssid)); + ar->ssid_len = 0; + + if (!test_bit(SKIP_SCAN, &ar->flag)) + memset(ar->req_bssid, 0, sizeof(ar->req_bssid)); + + up(&ar->sem); + + ar->sme_state = SME_DISCONNECTED; + + return 0; +} + +void ath6kl_cfg80211_disconnect_event(struct ath6kl *ar, u8 reason, + u8 *bssid, u8 assoc_resp_len, + u8 *assoc_info, u16 proto_reason) +{ + if (ar->scan_req) { + cfg80211_scan_done(ar->scan_req, true); + ar->scan_req = NULL; + } + + if (ar->nw_type & ADHOC_NETWORK) { + if (ar->wdev->iftype != NL80211_IFTYPE_ADHOC) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: ath6k not in ibss mode\n", __func__); + return; + } + memset(bssid, 0, ETH_ALEN); + cfg80211_ibss_joined(ar->net_dev, bssid, GFP_KERNEL); + return; + } + + if (ar->nw_type & INFRA_NETWORK) { + if (ar->wdev->iftype != NL80211_IFTYPE_STATION && + ar->wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: ath6k not in station mode\n", __func__); + return; + } + } + + /* + * Send a disconnect command to target when a disconnect event is + * received with reason code other than 3 (DISCONNECT_CMD - disconnect + * request from host) to make the firmware stop trying to connect even + * after giving disconnect event. There will be one more disconnect + * event for this disconnect command with reason code DISCONNECT_CMD + * which will be notified to cfg80211. + */ + + if (reason != DISCONNECT_CMD) { + ath6kl_wmi_disconnect_cmd(ar->wmi); + return; + } + + clear_bit(CONNECT_PEND, &ar->flag); + + if (ar->sme_state == SME_CONNECTING) { + cfg80211_connect_result(ar->net_dev, + bssid, NULL, 0, + NULL, 0, + WLAN_STATUS_UNSPECIFIED_FAILURE, + GFP_KERNEL); + } else if (ar->sme_state == SME_CONNECTED) { + cfg80211_disconnected(ar->net_dev, reason, + NULL, 0, GFP_KERNEL); + } + + ar->sme_state = SME_DISCONNECTED; +} + +static int ath6kl_cfg80211_scan(struct wiphy *wiphy, struct net_device *ndev, + struct cfg80211_scan_request *request) +{ + struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev); + s8 n_channels = 0; + u16 *channels = NULL; + int ret = 0; + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (!ar->usr_bss_filter) { + clear_bit(CLEAR_BSSFILTER_ON_BEACON, &ar->flag); + ret = ath6kl_wmi_bssfilter_cmd( + ar->wmi, + (test_bit(CONNECTED, &ar->flag) ? + ALL_BUT_BSS_FILTER : ALL_BSS_FILTER), 0); + if (ret) { + ath6kl_err("couldn't set bss filtering\n"); + return ret; + } + } + + if (request->n_ssids && request->ssids[0].ssid_len) { + u8 i; + + if (request->n_ssids > (MAX_PROBED_SSID_INDEX - 1)) + request->n_ssids = MAX_PROBED_SSID_INDEX - 1; + + for (i = 0; i < request->n_ssids; i++) + ath6kl_wmi_probedssid_cmd(ar->wmi, i + 1, + SPECIFIC_SSID_FLAG, + request->ssids[i].ssid_len, + request->ssids[i].ssid); + } + + if (request->ie) { + ret = ath6kl_wmi_set_appie_cmd(ar->wmi, WMI_FRAME_PROBE_REQ, + request->ie, request->ie_len); + if (ret) { + ath6kl_err("failed to set Probe Request appie for " + "scan"); + return ret; + } + } + + /* + * Scan only the requested channels if the request specifies a set of + * channels. If the list is longer than the target supports, do not + * configure the list and instead, scan all available channels. + */ + if (request->n_channels > 0 && + request->n_channels <= WMI_MAX_CHANNELS) { + u8 i; + + n_channels = request->n_channels; + + channels = kzalloc(n_channels * sizeof(u16), GFP_KERNEL); + if (channels == NULL) { + ath6kl_warn("failed to set scan channels, " + "scan all channels"); + n_channels = 0; + } + + for (i = 0; i < n_channels; i++) + channels[i] = request->channels[i]->center_freq; + } + + ret = ath6kl_wmi_startscan_cmd(ar->wmi, WMI_LONG_SCAN, 0, + false, 0, 0, n_channels, channels); + if (ret) + ath6kl_err("wmi_startscan_cmd failed\n"); + else + ar->scan_req = request; + + kfree(channels); + + return ret; +} + +void ath6kl_cfg80211_scan_complete_event(struct ath6kl *ar, int status) +{ + int i; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status %d\n", __func__, status); + + if (!ar->scan_req) + return; + + if ((status == -ECANCELED) || (status == -EBUSY)) { + cfg80211_scan_done(ar->scan_req, true); + goto out; + } + + cfg80211_scan_done(ar->scan_req, false); + + if (ar->scan_req->n_ssids && ar->scan_req->ssids[0].ssid_len) { + for (i = 0; i < ar->scan_req->n_ssids; i++) { + ath6kl_wmi_probedssid_cmd(ar->wmi, i + 1, + DISABLE_SSID_FLAG, + 0, NULL); + } + } + +out: + ar->scan_req = NULL; +} + +static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev, + u8 key_index, bool pairwise, + const u8 *mac_addr, + struct key_params *params) +{ + struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev); + struct ath6kl_key *key = NULL; + u8 key_usage; + u8 key_type; + int status = 0; + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: key index %d out of bounds\n", __func__, + key_index); + return -ENOENT; + } + + key = &ar->keys[key_index]; + memset(key, 0, sizeof(struct ath6kl_key)); + + if (pairwise) + key_usage = PAIRWISE_USAGE; + else + key_usage = GROUP_USAGE; + + if (params) { + if (params->key_len > WLAN_MAX_KEY_LEN || + params->seq_len > sizeof(key->seq)) + return -EINVAL; + + key->key_len = params->key_len; + memcpy(key->key, params->key, key->key_len); + key->seq_len = params->seq_len; + memcpy(key->seq, params->seq, key->seq_len); + key->cipher = params->cipher; + } + + switch (key->cipher) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + key_type = WEP_CRYPT; + break; + + case WLAN_CIPHER_SUITE_TKIP: + key_type = TKIP_CRYPT; + break; + + case WLAN_CIPHER_SUITE_CCMP: + key_type = AES_CRYPT; + break; + + default: + return -ENOTSUPP; + } + + if (((ar->auth_mode == WPA_PSK_AUTH) + || (ar->auth_mode == WPA2_PSK_AUTH)) + && (key_usage & GROUP_USAGE)) + del_timer(&ar->disconnect_timer); + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n", + __func__, key_index, key->key_len, key_type, + key_usage, key->seq_len); + + ar->def_txkey_index = key_index; + + if (ar->nw_type == AP_NETWORK && !pairwise && + (key_type == TKIP_CRYPT || key_type == AES_CRYPT) && params) { + ar->ap_mode_bkey.valid = true; + ar->ap_mode_bkey.key_index = key_index; + ar->ap_mode_bkey.key_type = key_type; + ar->ap_mode_bkey.key_len = key->key_len; + memcpy(ar->ap_mode_bkey.key, key->key, key->key_len); + if (!test_bit(CONNECTED, &ar->flag)) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delay initial group " + "key configuration until AP mode has been " + "started\n"); + /* + * The key will be set in ath6kl_connect_ap_mode() once + * the connected event is received from the target. + */ + return 0; + } + } + + if (ar->next_mode == AP_NETWORK && key_type == WEP_CRYPT && + !test_bit(CONNECTED, &ar->flag)) { + /* + * Store the key locally so that it can be re-configured after + * the AP mode has properly started + * (ath6kl_install_statioc_wep_keys). + */ + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delay WEP key configuration " + "until AP mode has been started\n"); + ar->wep_key_list[key_index].key_len = key->key_len; + memcpy(ar->wep_key_list[key_index].key, key->key, key->key_len); + return 0; + } + + status = ath6kl_wmi_addkey_cmd(ar->wmi, ar->def_txkey_index, + key_type, key_usage, key->key_len, + key->seq, key->key, KEY_OP_INIT_VAL, + (u8 *) mac_addr, SYNC_BOTH_WMIFLAG); + + if (status) + return -EIO; + + return 0; +} + +static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev, + u8 key_index, bool pairwise, + const u8 *mac_addr) +{ + struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev); + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: key index %d out of bounds\n", __func__, + key_index); + return -ENOENT; + } + + if (!ar->keys[key_index].key_len) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: index %d is empty\n", __func__, key_index); + return 0; + } + + ar->keys[key_index].key_len = 0; + + return ath6kl_wmi_deletekey_cmd(ar->wmi, key_index); +} + +static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev, + u8 key_index, bool pairwise, + const u8 *mac_addr, void *cookie, + void (*callback) (void *cookie, + struct key_params *)) +{ + struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev); + struct ath6kl_key *key = NULL; + struct key_params params; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: key index %d out of bounds\n", __func__, + key_index); + return -ENOENT; + } + + key = &ar->keys[key_index]; + memset(¶ms, 0, sizeof(params)); + params.cipher = key->cipher; + params.key_len = key->key_len; + params.seq_len = key->seq_len; + params.seq = key->seq; + params.key = key->key; + + callback(cookie, ¶ms); + + return key->key_len ? 0 : -ENOENT; +} + +static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy, + struct net_device *ndev, + u8 key_index, bool unicast, + bool multicast) +{ + struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev); + struct ath6kl_key *key = NULL; + int status = 0; + u8 key_usage; + enum crypto_type key_type = NONE_CRYPT; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: key index %d out of bounds\n", + __func__, key_index); + return -ENOENT; + } + + if (!ar->keys[key_index].key_len) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n", + __func__, key_index); + return -EINVAL; + } + + ar->def_txkey_index = key_index; + key = &ar->keys[ar->def_txkey_index]; + key_usage = GROUP_USAGE; + if (ar->prwise_crypto == WEP_CRYPT) + key_usage |= TX_USAGE; + if (unicast) + key_type = ar->prwise_crypto; + if (multicast) + key_type = ar->grp_crypto; + + if (ar->next_mode == AP_NETWORK && !test_bit(CONNECTED, &ar->flag)) + return 0; /* Delay until AP mode has been started */ + + status = ath6kl_wmi_addkey_cmd(ar->wmi, ar->def_txkey_index, + key_type, key_usage, + key->key_len, key->seq, key->key, + KEY_OP_INIT_VAL, NULL, + SYNC_BOTH_WMIFLAG); + if (status) + return -EIO; + + return 0; +} + +void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl *ar, u8 keyid, + bool ismcast) +{ + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast); + + cfg80211_michael_mic_failure(ar->net_dev, ar->bssid, + (ismcast ? NL80211_KEYTYPE_GROUP : + NL80211_KEYTYPE_PAIRWISE), keyid, NULL, + GFP_KERNEL); +} + +static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) +{ + struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy); + int ret; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__, + changed); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (changed & WIPHY_PARAM_RTS_THRESHOLD) { + ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold); + if (ret != 0) { + ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n"); + return -EIO; + } + } + + return 0; +} + +/* + * The type nl80211_tx_power_setting replaces the following + * data type from 2.6.36 onwards +*/ +static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy, + enum nl80211_tx_power_setting type, + int dbm) +{ + struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy); + u8 ath6kl_dbm; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__, + type, dbm); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + switch (type) { + case NL80211_TX_POWER_AUTOMATIC: + return 0; + case NL80211_TX_POWER_LIMITED: + ar->tx_pwr = ath6kl_dbm = dbm; + break; + default: + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n", + __func__, type); + return -EOPNOTSUPP; + } + + ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, ath6kl_dbm); + + return 0; +} + +static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy, int *dbm) +{ + struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (test_bit(CONNECTED, &ar->flag)) { + ar->tx_pwr = 0; + + if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi) != 0) { + ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n"); + return -EIO; + } + + wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 0, + 5 * HZ); + + if (signal_pending(current)) { + ath6kl_err("target did not respond\n"); + return -EINTR; + } + } + + *dbm = ar->tx_pwr; + return 0; +} + +static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy, + struct net_device *dev, + bool pmgmt, int timeout) +{ + struct ath6kl *ar = ath6kl_priv(dev); + struct wmi_power_mode_cmd mode; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n", + __func__, pmgmt, timeout); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (pmgmt) { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__); + mode.pwr_mode = REC_POWER; + } else { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__); + mode.pwr_mode = MAX_PERF_POWER; + } + + if (ath6kl_wmi_powermode_cmd(ar->wmi, mode.pwr_mode) != 0) { + ath6kl_err("wmi_powermode_cmd failed\n"); + return -EIO; + } + + return 0; +} + +static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy, + struct net_device *ndev, + enum nl80211_iftype type, u32 *flags, + struct vif_params *params) +{ + struct ath6kl *ar = ath6kl_priv(ndev); + struct wireless_dev *wdev = ar->wdev; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + switch (type) { + case NL80211_IFTYPE_STATION: + ar->next_mode = INFRA_NETWORK; + break; + case NL80211_IFTYPE_ADHOC: + ar->next_mode = ADHOC_NETWORK; + break; + case NL80211_IFTYPE_AP: + ar->next_mode = AP_NETWORK; + break; + case NL80211_IFTYPE_P2P_CLIENT: + ar->next_mode = INFRA_NETWORK; + break; + case NL80211_IFTYPE_P2P_GO: + ar->next_mode = AP_NETWORK; + break; + default: + ath6kl_err("invalid interface type %u\n", type); + return -EOPNOTSUPP; + } + + wdev->iftype = type; + + return 0; +} + +static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy, + struct net_device *dev, + struct cfg80211_ibss_params *ibss_param) +{ + struct ath6kl *ar = ath6kl_priv(dev); + int status; + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + ar->ssid_len = ibss_param->ssid_len; + memcpy(ar->ssid, ibss_param->ssid, ar->ssid_len); + + if (ibss_param->channel) + ar->ch_hint = ibss_param->channel->center_freq; + + if (ibss_param->channel_fixed) { + /* + * TODO: channel_fixed: The channel should be fixed, do not + * search for IBSSs to join on other channels. Target + * firmware does not support this feature, needs to be + * updated. + */ + return -EOPNOTSUPP; + } + + memset(ar->req_bssid, 0, sizeof(ar->req_bssid)); + if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid)) + memcpy(ar->req_bssid, ibss_param->bssid, sizeof(ar->req_bssid)); + + ath6kl_set_wpa_version(ar, 0); + + status = ath6kl_set_auth_type(ar, NL80211_AUTHTYPE_OPEN_SYSTEM); + if (status) + return status; + + if (ibss_param->privacy) { + ath6kl_set_cipher(ar, WLAN_CIPHER_SUITE_WEP40, true); + ath6kl_set_cipher(ar, WLAN_CIPHER_SUITE_WEP40, false); + } else { + ath6kl_set_cipher(ar, 0, true); + ath6kl_set_cipher(ar, 0, false); + } + + ar->nw_type = ar->next_mode; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "%s: connect called with authmode %d dot11 auth %d" + " PW crypto %d PW crypto len %d GRP crypto %d" + " GRP crypto len %d channel hint %u\n", + __func__, + ar->auth_mode, ar->dot11_auth_mode, ar->prwise_crypto, + ar->prwise_crypto_len, ar->grp_crypto, + ar->grp_crypto_len, ar->ch_hint); + + status = ath6kl_wmi_connect_cmd(ar->wmi, ar->nw_type, + ar->dot11_auth_mode, ar->auth_mode, + ar->prwise_crypto, + ar->prwise_crypto_len, + ar->grp_crypto, ar->grp_crypto_len, + ar->ssid_len, ar->ssid, + ar->req_bssid, ar->ch_hint, + ar->connect_ctrl_flags); + set_bit(CONNECT_PEND, &ar->flag); + + return 0; +} + +static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy, + struct net_device *dev) +{ + struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(dev); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + ath6kl_disconnect(ar); + memset(ar->ssid, 0, sizeof(ar->ssid)); + ar->ssid_len = 0; + + return 0; +} + +static const u32 cipher_suites[] = { + WLAN_CIPHER_SUITE_WEP40, + WLAN_CIPHER_SUITE_WEP104, + WLAN_CIPHER_SUITE_TKIP, + WLAN_CIPHER_SUITE_CCMP, +}; + +static bool is_rate_legacy(s32 rate) +{ + static const s32 legacy[] = { 1000, 2000, 5500, 11000, + 6000, 9000, 12000, 18000, 24000, + 36000, 48000, 54000 + }; + u8 i; + + for (i = 0; i < ARRAY_SIZE(legacy); i++) + if (rate == legacy[i]) + return true; + + return false; +} + +static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi) +{ + static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000, + 52000, 58500, 65000, 72200 + }; + u8 i; + + for (i = 0; i < ARRAY_SIZE(ht20); i++) { + if (rate == ht20[i]) { + if (i == ARRAY_SIZE(ht20) - 1) + /* last rate uses sgi */ + *sgi = true; + else + *sgi = false; + + *mcs = i; + return true; + } + } + return false; +} + +static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi) +{ + static const s32 ht40[] = { 13500, 27000, 40500, 54000, + 81000, 108000, 121500, 135000, + 150000 + }; + u8 i; + + for (i = 0; i < ARRAY_SIZE(ht40); i++) { + if (rate == ht40[i]) { + if (i == ARRAY_SIZE(ht40) - 1) + /* last rate uses sgi */ + *sgi = true; + else + *sgi = false; + + *mcs = i; + return true; + } + } + + return false; +} + +static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev, + u8 *mac, struct station_info *sinfo) +{ + struct ath6kl *ar = ath6kl_priv(dev); + long left; + bool sgi; + s32 rate; + int ret; + u8 mcs; + + if (memcmp(mac, ar->bssid, ETH_ALEN) != 0) + return -ENOENT; + + if (down_interruptible(&ar->sem)) + return -EBUSY; + + set_bit(STATS_UPDATE_PEND, &ar->flag); + + ret = ath6kl_wmi_get_stats_cmd(ar->wmi); + + if (ret != 0) { + up(&ar->sem); + return -EIO; + } + + left = wait_event_interruptible_timeout(ar->event_wq, + !test_bit(STATS_UPDATE_PEND, + &ar->flag), + WMI_TIMEOUT); + + up(&ar->sem); + + if (left == 0) + return -ETIMEDOUT; + else if (left < 0) + return left; + + if (ar->target_stats.rx_byte) { + sinfo->rx_bytes = ar->target_stats.rx_byte; + sinfo->filled |= STATION_INFO_RX_BYTES; + sinfo->rx_packets = ar->target_stats.rx_pkt; + sinfo->filled |= STATION_INFO_RX_PACKETS; + } + + if (ar->target_stats.tx_byte) { + sinfo->tx_bytes = ar->target_stats.tx_byte; + sinfo->filled |= STATION_INFO_TX_BYTES; + sinfo->tx_packets = ar->target_stats.tx_pkt; + sinfo->filled |= STATION_INFO_TX_PACKETS; + } + + sinfo->signal = ar->target_stats.cs_rssi; + sinfo->filled |= STATION_INFO_SIGNAL; + + rate = ar->target_stats.tx_ucast_rate; + + if (is_rate_legacy(rate)) { + sinfo->txrate.legacy = rate / 100; + } else if (is_rate_ht20(rate, &mcs, &sgi)) { + if (sgi) { + sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; + sinfo->txrate.mcs = mcs - 1; + } else { + sinfo->txrate.mcs = mcs; + } + + sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; + } else if (is_rate_ht40(rate, &mcs, &sgi)) { + if (sgi) { + sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; + sinfo->txrate.mcs = mcs - 1; + } else { + sinfo->txrate.mcs = mcs; + } + + sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; + sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; + } else { + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, + "invalid rate from stats: %d\n", rate); + ath6kl_debug_war(ar, ATH6KL_WAR_INVALID_RATE); + return 0; + } + + sinfo->filled |= STATION_INFO_TX_BITRATE; + + if (test_bit(CONNECTED, &ar->flag) && + test_bit(DTIM_PERIOD_AVAIL, &ar->flag) && + ar->nw_type == INFRA_NETWORK) { + sinfo->filled |= STATION_INFO_BSS_PARAM; + sinfo->bss_param.flags = 0; + sinfo->bss_param.dtim_period = ar->assoc_bss_dtim_period; + sinfo->bss_param.beacon_interval = ar->assoc_bss_beacon_int; + } + + return 0; +} + +static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev, + struct cfg80211_pmksa *pmksa) +{ + struct ath6kl *ar = ath6kl_priv(netdev); + return ath6kl_wmi_setpmkid_cmd(ar->wmi, pmksa->bssid, + pmksa->pmkid, true); +} + +static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev, + struct cfg80211_pmksa *pmksa) +{ + struct ath6kl *ar = ath6kl_priv(netdev); + return ath6kl_wmi_setpmkid_cmd(ar->wmi, pmksa->bssid, + pmksa->pmkid, false); +} + +static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev) +{ + struct ath6kl *ar = ath6kl_priv(netdev); + if (test_bit(CONNECTED, &ar->flag)) + return ath6kl_wmi_setpmkid_cmd(ar->wmi, ar->bssid, NULL, false); + return 0; +} + +#ifdef CONFIG_PM +static int ar6k_cfg80211_suspend(struct wiphy *wiphy, + struct cfg80211_wowlan *wow) +{ + struct ath6kl *ar = wiphy_priv(wiphy); + + return ath6kl_hif_suspend(ar); +} +#endif + +static int ath6kl_set_channel(struct wiphy *wiphy, struct net_device *dev, + struct ieee80211_channel *chan, + enum nl80211_channel_type channel_type) +{ + struct ath6kl *ar = ath6kl_priv(dev); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: center_freq=%u hw_value=%u\n", + __func__, chan->center_freq, chan->hw_value); + ar->next_chan = chan->center_freq; + + return 0; +} + +static bool ath6kl_is_p2p_ie(const u8 *pos) +{ + return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && + pos[2] == 0x50 && pos[3] == 0x6f && + pos[4] == 0x9a && pos[5] == 0x09; +} + +static int ath6kl_set_ap_probe_resp_ies(struct ath6kl *ar, const u8 *ies, + size_t ies_len) +{ + const u8 *pos; + u8 *buf = NULL; + size_t len = 0; + int ret; + + /* + * Filter out P2P IE(s) since they will be included depending on + * the Probe Request frame in ath6kl_send_go_probe_resp(). + */ + + if (ies && ies_len) { + buf = kmalloc(ies_len, GFP_KERNEL); + if (buf == NULL) + return -ENOMEM; + pos = ies; + while (pos + 1 < ies + ies_len) { + if (pos + 2 + pos[1] > ies + ies_len) + break; + if (!ath6kl_is_p2p_ie(pos)) { + memcpy(buf + len, pos, 2 + pos[1]); + len += 2 + pos[1]; + } + pos += 2 + pos[1]; + } + } + + ret = ath6kl_wmi_set_appie_cmd(ar->wmi, WMI_FRAME_PROBE_RESP, + buf, len); + kfree(buf); + return ret; +} + +static int ath6kl_ap_beacon(struct wiphy *wiphy, struct net_device *dev, + struct beacon_parameters *info, bool add) +{ + struct ath6kl *ar = ath6kl_priv(dev); + struct ieee80211_mgmt *mgmt; + u8 *ies; + int ies_len; + struct wmi_connect_cmd p; + int res; + int i; + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: add=%d\n", __func__, add); + + if (!ath6kl_cfg80211_ready(ar)) + return -EIO; + + if (ar->next_mode != AP_NETWORK) + return -EOPNOTSUPP; + + if (info->beacon_ies) { + res = ath6kl_wmi_set_appie_cmd(ar->wmi, WMI_FRAME_BEACON, + info->beacon_ies, + info->beacon_ies_len); + if (res) + return res; + } + if (info->proberesp_ies) { + res = ath6kl_set_ap_probe_resp_ies(ar, info->proberesp_ies, + info->proberesp_ies_len); + if (res) + return res; + } + if (info->assocresp_ies) { + res = ath6kl_wmi_set_appie_cmd(ar->wmi, WMI_FRAME_ASSOC_RESP, + info->assocresp_ies, + info->assocresp_ies_len); + if (res) + return res; + } + + if (!add) + return 0; + + ar->ap_mode_bkey.valid = false; + + /* TODO: + * info->interval + * info->dtim_period + */ + + if (info->head == NULL) + return -EINVAL; + mgmt = (struct ieee80211_mgmt *) info->head; + ies = mgmt->u.beacon.variable; + if (ies > info->head + info->head_len) + return -EINVAL; + ies_len = info->head + info->head_len - ies; + + if (info->ssid == NULL) + return -EINVAL; + memcpy(ar->ssid, info->ssid, info->ssid_len); + ar->ssid_len = info->ssid_len; + if (info->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE) + return -EOPNOTSUPP; /* TODO */ + + ar->dot11_auth_mode = OPEN_AUTH; + + memset(&p, 0, sizeof(p)); + + for (i = 0; i < info->crypto.n_akm_suites; i++) { + switch (info->crypto.akm_suites[i]) { + case WLAN_AKM_SUITE_8021X: + if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1) + p.auth_mode |= WPA_AUTH; + if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2) + p.auth_mode |= WPA2_AUTH; + break; + case WLAN_AKM_SUITE_PSK: + if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1) + p.auth_mode |= WPA_PSK_AUTH; + if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2) + p.auth_mode |= WPA2_PSK_AUTH; + break; + } + } + if (p.auth_mode == 0) + p.auth_mode = NONE_AUTH; + ar->auth_mode = p.auth_mode; + + for (i = 0; i < info->crypto.n_ciphers_pairwise; i++) { + switch (info->crypto.ciphers_pairwise[i]) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + p.prwise_crypto_type |= WEP_CRYPT; + break; + case WLAN_CIPHER_SUITE_TKIP: + p.prwise_crypto_type |= TKIP_CRYPT; + break; + case WLAN_CIPHER_SUITE_CCMP: + p.prwise_crypto_type |= AES_CRYPT; + break; + } + } + if (p.prwise_crypto_type == 0) { + p.prwise_crypto_type = NONE_CRYPT; + ath6kl_set_cipher(ar, 0, true); + } else if (info->crypto.n_ciphers_pairwise == 1) + ath6kl_set_cipher(ar, info->crypto.ciphers_pairwise[0], true); + + switch (info->crypto.cipher_group) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + p.grp_crypto_type = WEP_CRYPT; + break; + case WLAN_CIPHER_SUITE_TKIP: + p.grp_crypto_type = TKIP_CRYPT; + break; + case WLAN_CIPHER_SUITE_CCMP: + p.grp_crypto_type = AES_CRYPT; + break; + default: + p.grp_crypto_type = NONE_CRYPT; + break; + } + ath6kl_set_cipher(ar, info->crypto.cipher_group, false); + + p.nw_type = AP_NETWORK; + ar->nw_type = ar->next_mode; + + p.ssid_len = ar->ssid_len; + memcpy(p.ssid, ar->ssid, ar->ssid_len); + p.dot11_auth_mode = ar->dot11_auth_mode; + p.ch = cpu_to_le16(ar->next_chan); + + res = ath6kl_wmi_ap_profile_commit(ar->wmi, &p); + if (res < 0) + return res; + + return 0; +} + +static int ath6kl_add_beacon(struct wiphy *wiphy, struct net_device *dev, + struct beacon_parameters *info) +{ + return ath6kl_ap_beacon(wiphy, dev, info, true); +} + +static int ath6kl_set_beacon(struct wiphy *wiphy, struct net_device *dev, + struct beacon_parameters *info) +{ + return ath6kl_ap_beacon(wiphy, dev, info, false); +} + +static int ath6kl_del_beacon(struct wiphy *wiphy, struct net_device *dev) +{ + struct ath6kl *ar = ath6kl_priv(dev); + + if (ar->nw_type != AP_NETWORK) + return -EOPNOTSUPP; + if (!test_bit(CONNECTED, &ar->flag)) + return -ENOTCONN; + + ath6kl_wmi_disconnect_cmd(ar->wmi); + clear_bit(CONNECTED, &ar->flag); + + return 0; +} + +static int ath6kl_change_station(struct wiphy *wiphy, struct net_device *dev, + u8 *mac, struct station_parameters *params) +{ + struct ath6kl *ar = ath6kl_priv(dev); + + if (ar->nw_type != AP_NETWORK) + return -EOPNOTSUPP; + + /* Use this only for authorizing/unauthorizing a station */ + if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) + return -EOPNOTSUPP; + + if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED)) + return ath6kl_wmi_ap_set_mlme(ar->wmi, WMI_AP_MLME_AUTHORIZE, + mac, 0); + return ath6kl_wmi_ap_set_mlme(ar->wmi, WMI_AP_MLME_UNAUTHORIZE, mac, + 0); +} + +static int ath6kl_remain_on_channel(struct wiphy *wiphy, + struct net_device *dev, + struct ieee80211_channel *chan, + enum nl80211_channel_type channel_type, + unsigned int duration, + u64 *cookie) +{ + struct ath6kl *ar = ath6kl_priv(dev); + + /* TODO: if already pending or ongoing remain-on-channel, + * return -EBUSY */ + *cookie = 1; /* only a single pending request is supported */ + + return ath6kl_wmi_remain_on_chnl_cmd(ar->wmi, chan->center_freq, + duration); +} + +static int ath6kl_cancel_remain_on_channel(struct wiphy *wiphy, + struct net_device *dev, + u64 cookie) +{ + struct ath6kl *ar = ath6kl_priv(dev); + + if (cookie != 1) + return -ENOENT; + + return ath6kl_wmi_cancel_remain_on_chnl_cmd(ar->wmi); +} + +static int ath6kl_send_go_probe_resp(struct ath6kl *ar, const u8 *buf, + size_t len, unsigned int freq) +{ + const u8 *pos; + u8 *p2p; + int p2p_len; + int ret; + const struct ieee80211_mgmt *mgmt; + + mgmt = (const struct ieee80211_mgmt *) buf; + + /* Include P2P IE(s) from the frame generated in user space. */ + + p2p = kmalloc(len, GFP_KERNEL); + if (p2p == NULL) + return -ENOMEM; + p2p_len = 0; + + pos = mgmt->u.probe_resp.variable; + while (pos + 1 < buf + len) { + if (pos + 2 + pos[1] > buf + len) + break; + if (ath6kl_is_p2p_ie(pos)) { + memcpy(p2p + p2p_len, pos, 2 + pos[1]); + p2p_len += 2 + pos[1]; + } + pos += 2 + pos[1]; + } + + ret = ath6kl_wmi_send_probe_response_cmd(ar->wmi, freq, mgmt->da, + p2p, p2p_len); + kfree(p2p); + return ret; +} + +static int ath6kl_mgmt_tx(struct wiphy *wiphy, struct net_device *dev, + struct ieee80211_channel *chan, bool offchan, + enum nl80211_channel_type channel_type, + bool channel_type_valid, unsigned int wait, + const u8 *buf, size_t len, bool no_cck, u64 *cookie) +{ + struct ath6kl *ar = ath6kl_priv(dev); + u32 id; + const struct ieee80211_mgmt *mgmt; + + mgmt = (const struct ieee80211_mgmt *) buf; + if (buf + len >= mgmt->u.probe_resp.variable && + ar->nw_type == AP_NETWORK && test_bit(CONNECTED, &ar->flag) && + ieee80211_is_probe_resp(mgmt->frame_control)) { + /* + * Send Probe Response frame in AP mode using a separate WMI + * command to allow the target to fill in the generic IEs. + */ + *cookie = 0; /* TX status not supported */ + return ath6kl_send_go_probe_resp(ar, buf, len, + chan->center_freq); + } + + id = ar->send_action_id++; + if (id == 0) { + /* + * 0 is a reserved value in the WMI command and shall not be + * used for the command. + */ + id = ar->send_action_id++; + } + + *cookie = id; + return ath6kl_wmi_send_action_cmd(ar->wmi, id, chan->center_freq, wait, + buf, len); +} + +static void ath6kl_mgmt_frame_register(struct wiphy *wiphy, + struct net_device *dev, + u16 frame_type, bool reg) +{ + struct ath6kl *ar = ath6kl_priv(dev); + + ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: frame_type=0x%x reg=%d\n", + __func__, frame_type, reg); + if (frame_type == IEEE80211_STYPE_PROBE_REQ) { + /* + * Note: This notification callback is not allowed to sleep, so + * we cannot send WMI_PROBE_REQ_REPORT_CMD here. Instead, we + * hardcode target to report Probe Request frames all the time. + */ + ar->probe_req_report = reg; + } +} + +static const struct ieee80211_txrx_stypes +ath6kl_mgmt_stypes[NUM_NL80211_IFTYPES] = { + [NL80211_IFTYPE_STATION] = { + .tx = BIT(IEEE80211_STYPE_ACTION >> 4) | + BIT(IEEE80211_STYPE_PROBE_RESP >> 4), + .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | + BIT(IEEE80211_STYPE_PROBE_REQ >> 4) + }, + [NL80211_IFTYPE_P2P_CLIENT] = { + .tx = BIT(IEEE80211_STYPE_ACTION >> 4) | + BIT(IEEE80211_STYPE_PROBE_RESP >> 4), + .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | + BIT(IEEE80211_STYPE_PROBE_REQ >> 4) + }, + [NL80211_IFTYPE_P2P_GO] = { + .tx = BIT(IEEE80211_STYPE_ACTION >> 4) | + BIT(IEEE80211_STYPE_PROBE_RESP >> 4), + .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | + BIT(IEEE80211_STYPE_PROBE_REQ >> 4) + }, +}; + +static struct cfg80211_ops ath6kl_cfg80211_ops = { + .change_virtual_intf = ath6kl_cfg80211_change_iface, + .scan = ath6kl_cfg80211_scan, + .connect = ath6kl_cfg80211_connect, + .disconnect = ath6kl_cfg80211_disconnect, + .add_key = ath6kl_cfg80211_add_key, + .get_key = ath6kl_cfg80211_get_key, + .del_key = ath6kl_cfg80211_del_key, + .set_default_key = ath6kl_cfg80211_set_default_key, + .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params, + .set_tx_power = ath6kl_cfg80211_set_txpower, + .get_tx_power = ath6kl_cfg80211_get_txpower, + .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt, + .join_ibss = ath6kl_cfg80211_join_ibss, + .leave_ibss = ath6kl_cfg80211_leave_ibss, + .get_station = ath6kl_get_station, + .set_pmksa = ath6kl_set_pmksa, + .del_pmksa = ath6kl_del_pmksa, + .flush_pmksa = ath6kl_flush_pmksa, + CFG80211_TESTMODE_CMD(ath6kl_tm_cmd) +#ifdef CONFIG_PM + .suspend = ar6k_cfg80211_suspend, +#endif + .set_channel = ath6kl_set_channel, + .add_beacon = ath6kl_add_beacon, + .set_beacon = ath6kl_set_beacon, + .del_beacon = ath6kl_del_beacon, + .change_station = ath6kl_change_station, + .remain_on_channel = ath6kl_remain_on_channel, + .cancel_remain_on_channel = ath6kl_cancel_remain_on_channel, + .mgmt_tx = ath6kl_mgmt_tx, + .mgmt_frame_register = ath6kl_mgmt_frame_register, +}; + +struct wireless_dev *ath6kl_cfg80211_init(struct device *dev) +{ + int ret = 0; + struct wireless_dev *wdev; + struct ath6kl *ar; + + wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL); + if (!wdev) { + ath6kl_err("couldn't allocate wireless device\n"); + return NULL; + } + + /* create a new wiphy for use with cfg80211 */ + wdev->wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl)); + if (!wdev->wiphy) { + ath6kl_err("couldn't allocate wiphy device\n"); + kfree(wdev); + return NULL; + } + + ar = wiphy_priv(wdev->wiphy); + ar->p2p = !!ath6kl_p2p; + + wdev->wiphy->mgmt_stypes = ath6kl_mgmt_stypes; + + wdev->wiphy->max_remain_on_channel_duration = 5000; + + /* set device pointer for wiphy */ + set_wiphy_dev(wdev->wiphy, dev); + + wdev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP); + if (ar->p2p) { + wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_GO) | + BIT(NL80211_IFTYPE_P2P_CLIENT); + } + /* max num of ssids that can be probed during scanning */ + wdev->wiphy->max_scan_ssids = MAX_PROBED_SSID_INDEX; + wdev->wiphy->max_scan_ie_len = 1000; /* FIX: what is correct limit? */ + wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &ath6kl_band_2ghz; + wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &ath6kl_band_5ghz; + wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; + + wdev->wiphy->cipher_suites = cipher_suites; + wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); + + ret = wiphy_register(wdev->wiphy); + if (ret < 0) { + ath6kl_err("couldn't register wiphy device\n"); + wiphy_free(wdev->wiphy); + kfree(wdev); + return NULL; + } + + return wdev; +} + +void ath6kl_cfg80211_deinit(struct ath6kl *ar) +{ + struct wireless_dev *wdev = ar->wdev; + + if (ar->scan_req) { + cfg80211_scan_done(ar->scan_req, true); + ar->scan_req = NULL; + } + + if (!wdev) + return; + + wiphy_unregister(wdev->wiphy); + wiphy_free(wdev->wiphy); + kfree(wdev); +} |